Traction-engine



INVENTOR AMM/ ATTORNEYS 2 She ets-Shee t 1.

Patented Jan. I8, 1881 (ModgL) 2 SheetF-Sheet 2.

, s. s. BARR. Traction Engine.

No, 23 ,157." 1 Patented Jan. 18, 18.81.

wm ms J 'INVBNTOR:

ATTORNEYS.

VLFEYEHS. PHOTO LITHOGRAPHER. WASNINGTWI Dr C.

, ,UMTED STATES PATENT OFFICE.

SAMUEL S. BARR, OF WAUKON, IOWA.

TRACTION-ENGINE.

SPECIFICATION forming part of Letterslatent No. 236,757, dated January 18, 1881.

Application filed September 28, 1880. (ModeL) To all'whom it may concern:

Be it known that I, SAMUEL S. BARR, of

Waukon, in the county of Allamakee and State specification.

The object of this invention is better to guide and control the movements of the engine and to hold the boiler always in a horizontal plane.

Figure l is a plan of the device. Fig. 2 is a side elevation with a portion removed to better exhibit other parts. Fig. 3is a plan of the bottom of the engine.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the frame of the engine.

B is the rear axle, journaled in suitable boxes at a on the under side of said frame A, and carrying on either end the driving-wheels B B, and carrying, also, between the side beams of the frame A, a sliding cog-wheel,"B.

G is the front axle, centrally pivoted on the boltO, that projects downward from the plate .0, which is securedtothe bottom of the front beam of the frame A.

O O are the forward wheels, fixed on the axle C, said wheels 0 0 being designed to be small enough to turn beneath the frame A.

D is a rod set parallel with the axles B O and between them, and journaled in suitable boxes b b on the side timbers of the frame A, and having a cog-wheel, D, secured on an end thereof outside of the frame A.

D is a rope or chain, whose bight is passed with several turns around therod D, and whose ends are made fast to the front axle, O, on either side of the center thereof.

On the upper faces of the side timbers of the frame A are secured the triangular standards E, in whose apices thetrunnions c c that support the boiler F are journaled. Thesetrunnions 0 c are the laterally-extended ends of the strap or sling Ein which the boiler F rests.

Vertically secured on either side of the boiler F, at its front, are the segmental racks F, with toothed edges presented to the front.

and on the same shaft G is secured a worm or cog, G, that engages with the worm H, said worm H being on the rod H, whose forward end is pivoted in the rectangular lug d, which is projected from the contiguous standard A, while said rod H is extended on an incline rearward, through the supporting-lug f, on a standard, E, to within reach of the operator on the engine-platform, and said rod H has on its inner end a disk or wheel, H, for convenience of handling. By turning this rod and worm H H the shaft G is revolved and the front end of the boiler F thereby elevated or depressed, as the case may be, so as to keep said boiler F on a level on whatever grade the engine is moving.

J ournaled in the lug g of a standard, E, and a lug, h, projecting from the frame A, is the diagonal rod I, on whose upper end is a disk or wheel, I, for convenience of moving said rod, and on whose lower end is a worm, I,

that engages in the cog or worm wheel D of the shaft orrod D, so that by turning said rod I the said rod D is revolved with the effect of winding the rope D so as to draw on said rope D on one side while slackening it on the opposite side, and thereby moving the front axle, O, on its pivot G, and changing the direction of the engine.

It is designed to set the steam-cylinder of the engine on the top of the boiler F and connect its piston-rod with the driving crankshaft K, which shaft K is journaled parallel with the axles B O in the standards L L, that are secured on the sides of the boiler F, and also are supported on the arms of the sling E. On the outer end of this crank-shaft K is a pinion, K, that meshes into a cog-wheel, K, which is journaled on a trunnion, 0. Below this trunnion 0 and parallel therewith is a shaft, M, whose outer end is journaled in a suitable box, m, that is secured on a side timber of the frame A, while the inner end of said shaft M is journaled in the angle-brace M, whose lower end is secured on the engineplatform P, while its upper end supports the trunnion c, on which is the cog-wheel K. On this shaft M the cog-wheels N N are keyed side by side, the former, N, gearing with the cog-wheel K, and the latter, N, being designed to gear into the sliding cog-wheel B on the rear axle, B, when it is designed to propel the engine. To the collar or hub of this sliding cog-wheel B is secured one end of a shifting-bar, B, which bar 15 is pi"- Oted on the forward edge of the platform P, and has its handle projecting rearward within reach of the operator, who, by means of said shifting-bar B, can throw said cog-wheel B in or out of gear with the cog-wheel N, and thereby cause the engine to stop or move, as the case may be. R S, respectii'ely, represent the coal-bunker and water-tank of the engine.

W is a brake for the purpose of slowing or assisting in stopping the engine, said brake W consisting of a grooved collar, T, keyed on the crank-shaft K, and ot' a curved rod, U, that has one end fixed on a standard, L, and is then curved to lie in the groove of said collar T, and has its free end extended forward within reach of the operator.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A traction-engine, constructed substantially as herein shown and described, containing the following elements-i. e., a steering device consisting of rod D, cog-wheel D, rope D, diagonal rod I, and worm I, connected with the front axle, C; a boiler-adjusting device consisting of racks F, shaft G, pinions G, cog-wheel G, worm H, and rod H; a device for ungearing and gearing the driving-wheels with the driving-shaft, consisting of shaft K, pinion K, cog-wheels K, N N, sliding cogwheel B, axle B, and shifting-bar B, and a driving-shaft brake consisting of grooved collar T and curved rod U, as set forth.

2. In a traction-engine, the combination, with the boiler F, supported by the strap E, having trunnions c c, of the racks F, shaft G, pinions G, cog-wheel G, worm H, and rod 11, substantially as herein shown and described, whereby said boiler is adjusted in a vertical plane, as set forth.

SAMUEL SAMUELS BARR.

Witnesses ROBERT BARR, HOLVER SIMENSON. 

